Dude, I am Trippin! Share definition Flag phrase used commonly when the effects of LSD kick in. Usally happens up to 2 hours after injestion. Joe: yo pat you alright??Pat: DUDE, I AM TRIPPIN! Dude, I am Trippin! by yadirtyschmuckFL October 1, 2010 0 0 Get merch Get the Dude, I am Trippin! mug. Buy Now — $32.95 See more merch